Band-saw-tooth roller



June 7, 1927.

A. E. PRoc'roR BAND SAW TOOTH ROLLER Filed Dec. 6. 1926 Z-Shegts-Sheet 1 T 119.1 Fzjg. 2

INYENTOR.

June 7 1927 V 7 1,631,336 A. E. PROCTOR BAND SAW TOOTH ROLLER Filed Dec. s, 1926 zsm w-sheet 2 .jfi'xw (E5. INVENTOR.

BY%QA/ 1QL ATTORNEY.

Patented-June 7, 1927." l

' :nnnnn'riii. 3300:1103, or m rmem gwnsnm m'- 1 1 i :Mfy invention relates to improyement-s in 'loand saw tooth rollers, and themain'object v of my improvement is to pl'ovideflneansifor -V out sooringf-the sawteeth, :7 V

. compressing a bevel on the edges :of it-he gnllets' of hand saws; Another obj eat of my improvement is ;to provide; means for rolling ,saidbevels at aslarge' an angle o'finclination ,tothe ,planeof the sawwasgis possible. And a{-urther object of'my improvement isto provide, mean'sxfor rolling said be'vels Withf This invention ani/improvementjonithe l disclosures, oif-nrny applicationfor'Letters 1 Patent',%S.erial No. 105,934, filed Mayl,

,. which has been abandoned.

' EI 'zattain these; obj ects, 'Wlth edge elevation of r'ny Irollin'g' de iee,i'Fig; 2

a'aside elevation of Fig." 1', Fig. 3" is a'irear- .end-elewation of a band-saw grinding Erna-e c'hine withlmy, tooth roller. fastenediin i 0p erative position, showingrthejsaine view- .thererifas 1n vl ng.- 2, drawn ona-sinaller scale, Fig.4'1s a -v1'ert1cal cross sectlonof a on alarger scale, Fig. 571% sideelevation-of I a screw plug, drawn on alargerscal-e, F1 .f6

is ant-end view'ot a roller and its-cylin rioalvmounting, drawn on a larger scaleyFig. x7iis aaside viewrof Fig."6,::Fig.. 8 isanien'd view of -zFig. '7,Fig. 9 is aside viewjofthe tension bolt and long nut thereonfdrawn on- 1 smaller scale, Fig. 10 1s :a front elevatlon of d Fig. 3 drawn onia largerrscale,'ian'cl Fig; 11

is-a sideielevati-on ofav segregated area of Similar" characters refer to 'siinilarjjipaits throughout; 7

Reference being liad the "greater detail;

;paWl"-18f i The iaotion loeingsuchj that. at each On'theiframe 12 0f a hand-saw grin ing ma'eh me is mounted band-saw A in pos tion forkvbeing ground f"Provision; not "shown,

' 1 :15; made on frame 12 for 'osoil'latmg arm 14, I

of the grinding machine eanses :hea dfa ibto Y 1 oscillate {and remove wheel 1-5fromitsillu$ 1 .tratejdflpositionjat the eo'm'plejtioniofits Work? in {each gufllet, when pawl =13-operatestoatl ,vaneef-sawi -A."a tooth space md Wheel ,l5-"is V again returne d"to Contact with a :gullt.

Preferably, Iprovideaispeoial casting :16,

5 Upper end- 18' of saii' ote d to jaw 22 at:241 S'ereivflOislengaged in .a Ju "onqsaid'fl casting and hearsagainst the lower; end? of 1 j aw' 22 for adj u'stmenti j A Jaws 22, ZSMareheldtQgether an'ddmwn fo'gfiher *Q -P V 2 by bolt fd t'zextended.

through. registering" holes in said; jaws 122,

23. I Spiral spring 27 is inou'ntedon oneiend {Long nut 25 hasv dianietrieal hole (if thtareithrouglr and is engaged on the threaded end of bolt a tobea'rza gainstjaww23. 1 Knob-bed 1mm rod 26iis mountedin niltfhol-en for" convenience. interning said nut.iand qoperat f} ii' jaiw '22: at Tight-angles hreai'ded; ends and nner ends of holes- 28 eiIIdQdF in' we 22 1 Also mounted on 'is "os'eill atiible ev l-nerh iad an.on' hi h grinder" hen 5 3, is mountedflifor;revolution-iiJWhel" 1 5"' 1s' -zis is -ws'nell understood; :the normal operati'on tshown in grinding' position' in l a jigilllt I "and,

1-8 for fastening my vrollerto the'illustrated I shape ofsaW grinding-machine a flhe, lower end 16 0f; this Casting;isl provided with two I qhorizontalv'slots l7 pffor the-extension there -lthrough o'fserev'vs .Witl1j1whieh', sai-d eastingjis {fastened to :frame lQi gSlotsQlFYIprO-j wide for transverse and nelin'ed adjustment V of'said e'asting; v the mechanism V illustrated in theqaoeompanying two sheets 01f d-rawings'in Which-Figure 1 is a: front,

v casting is l'reeessedat'19;for theirCfiption.ofitheflzloviterlendi'of the longer jaw 22 of my roller-frame. fvlth eal slot a? is zproi idefdini the lower end of ;jaw;22-and through itwislexten'c'led' SOIQWQI engagedin the upperend 1820f saideastingf f 1 .1 120 provides fornvertieali{adjnstlnent of-1 7 said jaA vJ ShorterjaW-23, islhingedor =piv s5 y v a d Q33 p t y; tofbw f against. c e -z l I d theends1of sai d cylinders a'dcylinder- 29 engaged therewith is revolved "bear in annular grooves 35 in said plugs.

In fastening .my'tooth roller to-a -saw grinding machine, as, for instance,-like' that shown in Figs. 3 and 10, care is. taken to bring thecontact of rollers 32 with the saw teeth above the bottom of the gullets as shown in-Fig. 1.0. Also, the plane of rollers .32 needs to be atanang'le with the line of thetips of the sawteeth-whichis parallel with hinge bolt 2-1. Asshown in Fig. 10, the

dotted line ii u passes through the center -of one of rollers 32 parallel "with the sides thereof 'andfit is,1therefore, perpendicular to "line tif whichcoincides with the axis of pin 31 on which said roll revolves. 'Inopberating. my roller I have found} that if'the plane of 'rolls 32 is parallel with a? line throughthejpoints of the teeth 'of the saw being rolled therewith said saw tends to rise .j-between rolls 32: and prevent theirproper .action thereon but when the plane of said rolls is inclined upward toward the approachingteeth fromone to two degrees, the Esaw; wlll rema n in contact w th the guide, on which the back thereof bears while passing through the grinder 12. the action ofsaid rolls. 32 aids in keeping the saw m place in the machine. Line u-u,- asdrawn in Fig.

10,,is inclined upward toward the left about one degree and axial line t 1f-. as-stated, is at right angles therewith. Theposition of line u-ruas ad uSted by revolving turret heads 36wl1iclrset rolls 32 as explained; and,

also as explained, the desired position of said rolls mainta ned by setscrews 37. r Although the axes ofrolls 32,-o11e of which is indicated at t--2iin Fig. 10. are in the same plane perpendicular to the plane of sawA, I prefer that said axes be not parallel.

Fig. 2 shows my preferred relation' of these axesr as viewed longitudinally withsaw A. In.F;ig. 2s: s11savertlcal lin'ethrough the centerof piv0t24, and p.0, 1"0'are lines tange'ntto the proximate surfaces ofrolls '32 which ntersect ljine---ss-at o; and the lowerends of jaws '22 and 23 are sufiiciently spreadyas shown in Figsr2 and 3,'to cause tangent line ;0 '0 to be parallel with the axis the roll'with which it contacts, whiletangent vline 9"0 is parallel with the axis 7 of the roll with which it contacts. Bent line m ni-coincided with .the axes of cylinders 29,.1ts 'leftshand end isperpendicular to. line -p-owhile itsright-hand end is perpendicu- Ivto-1ine-r 0. Angle poryis preferably about-43 which makes the bent line mn -A is shown.

dom from fracture.

inclined from its intersection with line 8---8 about 2", above the horizontal. V

In Fig. 4 an enlarged cross section of saw Beveled surfaces D, D are assumed to have beeni'olled on the edges of thegullet in my machine. Anglewmy is the angle of these surfaces when promoted, and

concaveEis the shape of the cross section of the gullet caused by rolling bevels D on its edges.- The greaterthe angle wwi the more complete will bethe reforniat-ionof, the serrated edges of the gullet left by the grinder and the more uniform the reformed.

mass at this'place and the greater the frcc- Alsothe depthofthe concave surface E will-be greater wllen'said angle wiry is enlarged and the surfaces'D are extended. All of which tend toward 'ln' practice-ithas been found that angle warymay be 1I1C1"2YSed'by ncreasing the rolls 32 or by increasing angle; 3907,". Then the curvature of the crown of the rolls is much greater than illustrated said rollscut into the saw teeth 13 "asthey roll over the same in operation. Thissco-ring of the -teeth 'ls'undesirable for two reasons: the tooth-j edge ofthe saw is relieved and these scores prevent the formation of "a perfectly swaged point. when'the regrinding of the saw has broughtthetooth ends to the line of said scores. been found desirable to incline jaw 22 for- For these reasons it has the strengthening of the saw at these places" and the stifiening of the base of teeth B I curvature of the crown of the periphery of ice ivaidoii'tlie machine about 2". out ofthe vertical. This is "done by using a part ofv the clearance afforded by slots 17. Then. the lower end of jaw .23 ls'lnClllleCl' outward about 2 and rolls 32 are caused to bear equally on bothsidesof sawLA therebetween by adpisting the set of screw plugs 34L. ln ad usting-the set :of rollers 32 by revolving plugs 34:, endwiseadjustmentnnd adjust- 1 ment in rotation are made simultaneously. In order todisassociate these two movements.

when desired, it is attainedcto a degree by withdrawing cylinders 29 and resetting them in another of grooves 33 in engagement with bosses 37.." Also the exactnessof angle-p01 is not closely limited although the angle of inclination of line H withthe :hori- Zontal isfquite.closelylimited.

. lirutliese several easy ways the needed adjustments are attainable with my machine and an assembly clearly illustratedin Figs. 3

'0 and 10 is reached, in which rolls 32 a1'e proximate near their upper surfaces and said roll surfaces are inclined relative. to the line of the points of the saw teeth, which :holds. said-sawdo wnon its guide and rolls beveled edges on the" gullets substantially as i-llustratedlinv Figst and 11 at;;D, D. V

Although the above description has, for

,collvenier ce,'assumed that in. practice the gullets are rolled simultaneously with the sharpening of the saw, however, I generally I j i 1,631,336

prefer to perform these 'as two sep'arate'op- 'erations and rollthe saw'after the 1 The grinder illustrated grinding has been completed.

' "grinding right-hand saws, and my roller is 1 fastened to the right-hand end thereof For v rolling left-hand saws my roller is provided fliwith a left-hand bracket in ;pla,ce of 16, 18

and fastened on the left-hand endjot alefthand grinding machine where the saw passes 7 g 'rollerfrom the right toward J the left. 1 v 1 v Therefore ward at the right and the adjustment; is

made by; revolving turret heads 36 the proper amount.

Having thus disclosed my; invention, what I; claim as new therein and desire to'secure i by' Letters Patent is, I

1. In a band sawtooth roller in combina- Ition,-t-w o hinged jaws, resilient means to retain said jaws in manually andautomatr cally adjustable proximity, a roll mounted for revolutionin each of said aws in opposite proXimity, andmeans to adjustthe plane of each of said rolls in relative angularitywith the a'xisof said. hinge of said jaws,

' nation, two hinged jaws, resilient'means to retain said'jaws in manually and automatically adjustable proximity, a roll mounted for revolution ,in each'of said jaws in opposite proximity, and means to ad ustthe planes of said rolls in relative angularity.

. 3. In a band saw tooth roll-er in Co1'nbi nation, two hingedfjaws, resilient means to retain sa d awsm voperative proxmnty, a-

'roll mounted for revolution in each of said jawsin opposite proximity adapted for the ''-passage of a -band sawtherebetween, and

means to fasten said jaws to the Jframeot a band saw toothgrind'er adapted for both vertical and inclined adjustment of said jaws onsaid frame' I 4. Ina saw tooth 'rollerf the combination of two hinged jaws, and stroll mountedtor revolution 111 each ofsaid jaws in proximate oppos tion, witlifmeansto ad ust: the planes l Fig. is

I when rolling- I left-hand saw" teeth the plane of rolls .32 is'inclinedup;

a bandsaw tooth roller'in combi-- of said rolls, in angular ,relationj' with the hinge-of said jaws. v r

5. In a saw tooth roller' the combination of two hinged. jaws, and a roll mounted for revolutionin each of said jaws fin op erative proximity and opposition, with "means to adjust theaxes of said rolls in.;, a is angular relation;v I

6. In a saw tooth roller the combination 1 v of two hinged jaws, andaroll mounted for I revolution in each of said iaws'in operative V v proximate opposltlon, with means to ad ust the planes of said rolls in relative angularity 1 with the .axis of saidfhinge, and 'mean's to '1 adjust the axes of said rolls in angular relation.

7. In a 'sawtooth roller incombination,

:two hingedjaws each having ajbore therethrough at r1g-htangl-es w-ith the axis of said hinge said, bores in line in one position each having a threaded outer end, a roll hous ngmounted, 1n eachone of sa d'bores' in oscillation ofs'aidjawson saidhinge and.

,80 adapted to bear on the "said roll housing therein, andnneans to engage each of said; screw plugs withjthe roll housing in said bore'there'with for simultaneous movements 1n said bore. I

r In a saw tooth roller incombination, two hinged jaws, each having afbore therethrough at right angles with the axis} of said hinge said bores in line'in, one position in oscillation of said jawsion said hinge and.

each of saidbores havinga threaded'outer end, a rollhousing mounted in eachof; said bores for revolution'and reciprocation therein, a roll mountedfor revolutionr ineach' of I said roll housings L in operative opposite;

proximity, a screw plug' eng'aged in'the said threaded end of each of said bores adapted i I to bear on said vroll housingtherein, means i to engage each ofxsaid"screw plugs with the I g a} V .multaneous movements in saidbore, andff,

means to fasten 's'ai'd screw-plugs in? desired" roll housing in said bore therewith for sipositions in rotation;

w ALBERT ELPROCTOR. v 

